In order to bring you the best possible user experience, this site uses Javascript. If you are seeing this message, it is likely that the Javascript option in your browser is disabled. For optimal viewing of this site, please ensure that Javascript is enabled for your browser.
Home Resources Success Stories Application Briefs

Delivering the Highest Mobile Throughput and Guaranteed Bandwidth for Onboard Communications

Service Assured Networking for Urban Rail and Monorail

Typical Application

  • High-speed mobile access on moving trains, subways and monorail systems

Typical Users

  • Metropolitan mass transit authorities

A wireless urban railway communication network must incorporate robust defense mechanisms to protect it from interference, spoofing and jamming. Moreover, it must provide prioritization, quality of service (QoS) and always-on connectivity with minimum downtime in order to simultaneously support CCTV video surveillance, WiFi, VoIP/PTToIP, and other critical applications.

RAD’s Service Assured Networking solutions for transportation systems include Airmux Mobility, which is specifically designed to address the demanding requirements of onboard communications. Airmux Mobility delivers the highest throughput and guaranteed bandwidth to each railway car, even on subways and monorail lines. It also offers bi-directional and assymetrical train-to-track bandwith with per-train QoS guarantees. This allows critical services such as displays, panic buttons, PTT (push-to-talk), telemetry, ticketing machines, and video streaming to be transported to and from the train and control and operations centers. Airmux Mobility is fully compliant with railway environmental standards such as EN 50155, EN 61373, EN 50121, and IP67, which are prerequisites for equipment installed on trains and metros.

Reduces Costs and Risks

Due to Airmux Mobility’s best-in-class radio performance and interference immunity, base stations provide extended coverage, even if they are located in tunnels or other underground facilities. This not only ensures QoS and continuous connectivity, but also eliminates the CapEx that would otherwise have to be invested to accomplish the same result. The use of sub-6GHz unlicensed bands, moreover, significantly reduces OpEx without any effect on customer experience. This is because Airmux Mobility provides dedicated bandwidth allocation and service level agreements (SLAs) per train with equivalent – or even better –QoS and interference immunity that would be obtained over licensed bands. The solution assures a fast handover time under 50ms, which allows continuous transmission of critical applications (e.g., CCTV) along the entire line. The handover process functions independently of any central unit (controller), and all decisions are decentralized at the radio level so that there is no single point of failure.

RAD’s comprehensive offering is comprised of its Airmux-5000 point-tomultipoint Ethernet radio and ETX-2 IP and Carrier Ethernet demarcation devices. Configuration, provisioning, monitoring, and both network and end-to-end service management, are provided by the RADview carrier-class network management system.




Seamless bi-directional and assymetrical train-to-track connectivity with sub-50 msec handover

Enables QoS guarantees for critical applications on moving vehicles including CCTV, voice and data, with no single point of failure

Long-range above and below-ground coverage between base stations

Reduces number of base stations, which reduces CapEx

Transmits over license-free sub-6 GHz frequencies

Eliminates licensing costs and bureaucracy

Fully compliant with railway standards and IP67

Critical applications unaffected by temperature, humidity, shock, vibration, and intrusion

Simple installation, configuration and maintenance

Quick set-up, lowers OpEx

Built-in encryption, robust interference immunity mechanisms

Secure communications, no spoofing

RADview carrier-class network management system

Provides configuration, provisioning, monitoring, and both network and end-to-end service management


Required information
Contact an Application Engineer 

Featured Product